Harper Engineering Company

Name

Harper Engineering Company

Legal name

Harper Engineering Co.

Website

https://harperengineering.com

Company type

Private

Founded year

1968

Operating status

Acquired

Headcount range

101–250 employees

Ownership category

akta.pro rank

Product category

Aerospace Interior Components Manufacturing

NAICS

Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413), Aerospace Product and Parts Manufacturing (33641)

SIC

Aircraft Parts & Auxiliary Equipment, Nec (3728), Aircraft & Parts (3720)

akta.pro primary industry

Aerospace Interior Materials & Components (Cabin) (IMABANAI)

akta.pro secondary industry

Interior Structural Components (Floor Beams, Seat Tracks, Frames) (IMABAEAJ)

Keywords

• Aircraft interior components
• Aerospace latching systems
• Thermoplastic composites manufacturing
• Certified aviation hardware
• Aerospace mechanical engineering

Headquarters

HQ city

Renton

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure

Revenue model

1. Aircraft Interior Components and Mechanisms: Design, manufacturing, and certification of mechanically engineered devices for aircraft interiors including latching systems, securing mechanisms, hinges, seat track fittings, oxygen bottle brackets, and other interior hardware sold to aerospace OEMs and airlines.
2. Composite Manufacturing Services: Production of lightweight composite parts including CFRTP stowage bin covers for Boeing 787, 747-8, and 777X aircraft. Manufacturing services include thermoplastic composites, precision machining, and hybrid overmolding.
3. Engineering and Certification Services: In-house engineering design, certification testing, and quality assurance services supporting the product manufacturing, with comprehensive testing capabilities and resources for aerospace component certification.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Harper Engineering Company designs, tests, certifies, and manufactures mechanically engineered devices and composite components for aircraft interiors, including latching systems (bin, ceiling, door), seat track fittings, oxygen bottle brackets, hinge systems, panel fastening systems, and continuous fiber reinforced thermoplastic (CFRTP) composite parts. These FAA-certified products are sold to commercial aerospace OEMs (Boeing, Airbus, Embraer), Tier 1 interiors suppliers (Collins Aerospace, Adient, Safran), and commercial airlines for both line-fit and aftermarket applications.

Product overview

Harper Engineering Company is a manufacturer of mechanically engineered aircraft interior devices, primarily latching systems and fittings for commercial aviation. The company operates as a single unified product portfolio focused on aircraft interior components including bin latching systems, ceiling latching systems, door latching systems, seat track fittings, bottle bracket systems, hinge systems, panel fastening systems, and continuous fiber reinforced thermoplastics (CFRTP). These products are designed, tested, certified, and manufactured in-house using capabilities including mechanical design, precision machining, composites manufacturing, certification testing, and complex assembly. The company was acquired by Loar Holdings Inc. in January 2026 and continues operating under the Harper name.

Differentiator

Problem solved

Functional benefit

Products and services

• Panel Fastening System A mechanical fastening system for aerospace panel assembly featuring inserts custom-made for any panel thickness, curvature, and mating angle. Includes fly-away tooling capability that eliminates the need for assembly fixtures, enabling adhesive-free panel assembly and reducing assembly cost and time. Targets aerospace OEMs and Tier 1 interiors suppliers.
• Bin Latching Systems Stowage bin latching systems backed by over 50 years of design and manufacturing experience. Customized to specific customer requirements with quality and reliability validated for in-service commercial aircraft platforms.
• Ceiling Latching Systems Latching systems engineered for aircraft ceiling panels, addressing challenging requirements including deflection, anti-rattle, decompression, and limited access conditions in commercial aircraft cabins.
• Door Latching Systems Door latching systems for galleys, lavatories, crew rests, and interior monuments. Includes high-security products for flight deck doors with ballistic protection.
• Seat Track Fittings Seat track fittings developed for the Boeing 787 Dreamliner using inconel fasteners and forged titanium body, with enhanced design offering load capability exceeding 14,000 pounds for commercial aircraft seating systems.
• Bottle Bracket Systems Oxygen bottle bracket systems for aircraft, shipped in volumes of thousands per month worldwide, with capability to produce brackets for non-standard bottle sizes.
• Hinge Systems Range of hinges from basic spring-loaded piano-style designs to intricate 6-bar mechanisms, including dampened constant force shelf bin door hinges for commercial aircraft interior applications.
• Molded-in Locking Inserts Low-profile molded-in locking blind inserts designed for limited-space situations in plastic materials, used as part of aerospace panel fastening and assembly solutions.
• Continuous Fiber Reinforced Thermoplastics (CFRTP) Lightweight, high-performance press-formed CFRTP stowage bin covers and composite assemblies for Boeing 787, 747-8, and 777X aircraft, manufactured at the Kent, WA composites facility with proprietary bonding technology.
• Flight Deck Secondary Barrier Patent-pending flight deck secondary barrier system that enhances cockpit security, featuring a seamless design with maximum aisle protrusion under 2.5 inches, user-friendly one-hand operation, security locks, and customizable curtain design.
• Universal Interior Products Diverse range of aircraft interior hardware including decorative washers, spring-loaded door snubbers, lock and key combinations, and hat clips, with combined sales quantities in the millions for commercial aerospace customers.

Quantifiable outcome

• 99.9% on-time delivery rate
• +6 more outcomes

Named customers14 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Sekisui Aerospace: Manufactures composite interior parts and acoustic/thermal insulation for commercial aircraft. Direct comparable in CFRTP/composite interior components serving Boeing and other OEMs.
• NMG Aerospace: Manufacturer of engineered mechanical components and assemblies for aircraft interior and air management systems. Direct comparable as a niche supplier of mechanical interior hardware for commercial aerospace OEMs.
• M.C. Gill Corporation: Manufacturer of composite panels and laminates for aircraft interiors including cabin and cargo applications. Direct peer in composite interior parts with overlapping commercial aerospace OEM customer base.

Others

• Loar Holdings (other portfolio companies): NYSE-listed holding company specializing in niche aerospace component businesses; now Harper's parent. Peer relationship exists through other Loar subsidiaries (e.g., Genesis, J&C Aero) that supply similar niche aerospace mechanisms.

Broad incumbents

• TransDigm Group: Acquisitive aerospace component manufacturer with proprietary, sole-source specialty parts business model. Comparable for its specialty-mechanism aerospace focus and Loar-style holding company strategy.
• Triumph Group: Diversified aerospace supplier of structures, mechanical systems, and interior components. Comparable as a broad incumbent serving the same commercial OEM customer base with overlapping mechanical and structural product lines.
• HEICO Corporation: Aerospace and electronics company supplying FAA-approved parts, components, and aftermarket services. Comparable as a broad aerospace parts incumbent with strong aftermarket exposure overlapping Harper's airline-customer footprint.
• Senior plc: UK-based supplier of high-precision engineered components and fluid conveyance systems for aerospace. Comparable as a precision aerospace components manufacturer with similar mechanical-engineering capabilities.
• GKN Aerospace: Tier-1 supplier of aerostructures, engine components, and composite materials. Comparable as a broad aerospace incumbent with composites capability serving Boeing, Airbus, and other OEMs Harper also supplies.
• Diehl Aviation: Tier-1 supplier of aircraft cabin interiors and systems, including cabin management, lighting, and lavatory/galley monuments. Comparable as a broad cabin interiors incumbent that competes with Harper-supplied Tier-1s and shares the same commercial OEM customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/harper-engineering-company

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Harper Engineering Company